Speaker
Nouman Butt
(Syracuse University)
Description
We study a four dmensional lattice model comprising four reduced staggered fermions coupled to a scalar field through an SO(4) invariant interaction. Symmetries
of the lattice theory prohibit fermion mass terms. If we switch of the kinetic
term for the scalar field we obtain a model with a four fermion interaction which has been the focus of several recent lattice investigations. The results of those
investigations has revealed that the pure four fermi model
possesses both massless and massive SO(4) symmetric phases separated by a very narrow symmetry broken phase. In this work we explore the phase diagram
of the more general Yukawa model with a scalar kinetic term and present evidence that one can pass from the massless to massive phases without
passing through an intermediate broken phase.
Primary author
Nouman Butt
(Syracuse University)